Add standalone commands

[rmccue]

Fixes #24.

• Converts the repo to a Lerna monorepo
• Adds three new packages: @humanmade/create-react-wp-project, the common core of the commands; and create-react-wp-plugin and create-react-wp-theme, the user-facing commands
• Renames react-wp-scripts.php to loader.php
• Additionally adds either plugin.php for plugins or functions.php and style.css for themes to create a minimal plugin/theme
• Automatically generates the PHP namespace from the last component of the path

To do:

• Rewrite documentation for new setup
• Testing, testing, testing
• Switch to react-wp-scripts instead of temporary file reference

[rmccue]

ping @kadamwhite @igmoweb @tfrommen for thoughts

[rmccue]

This is ready to go, so time for review! 😁

[rmccue]

@kadamwhite Ever get a chance to review this? :)

[rmccue]

@kadamwhite Ping :D

[kadamwhite]

I'm unable to test this because no matter what I do with npm link, during the npx create-react-wp-plugin step the project blows up because new-plugin/node_modules/react-wp-scripts/scripts/init-extra.js is missing. If you have working steps for how to test, please advise.

Merge conflicts also need to be addressed. I know that's my fault for delaying in my review, but if you can update then I'll prioritize this.

[igmoweb]

@kadamwhite Would this command work?

create-react-app --scripts-version git+https://git@github.com/humanmade/react-wp-scripts.git#init-commands .

[roborourke]

Latest CRA version allows you to specify --scripts-version file:path/to/my-scripts